Here is another data point regarding the performance of
beta.wikipedia.com
I'm now running
7 stressbots (page readers)
2 postits (page writers)
concurrently accessing
beta.wikipedia.com via a 512K DSL connection.
I'm getting the following statistics:
average page read time 2.9 seconds
average page write time 4.9 seconds
corresponding to an
average page read rate of 7/2.9 = 2.4 pages/sec
average page write rate of 2 / 4.9 = 0.41 pages/sec
making a total sustained transaction rate of around 2.8 hits/sec, or
around 240,000 hits/day or over 7 million hits a month.
However, my inbound traffic is around 61 kbytes/sec doing this, so my
512k DSL link is currently the bottleneck, not the server.
Dropping the concurrency to
3 stressbots
1 postit
gives:
average page read time 1.9 seconds
average page write time 3.1 seconds
corresponding to an
average page read rate of 3/1.9 = 1.57 pages/sec
average page write rate of 1 / 3.1 = 0.32 pages/sec
total transaction rate: 1.9 hits/sec
for an inbound traffic rate of about 26 kbytes/s, where my DSL link is
no longer the bottleneck, but the system is under less load.
To really stress test the server, we will need several clients to run at
once on several different links. I'm going to stop the test now.
It would be useful for testing if we could have a page that gave current
Linux operating system stats, perhaps in a sysop-only page?
Neil